The new Claude Opus 4.8 is a "modest but tangible improvement," but a Mythos model you can use may be just weeks away. Jon covers artificial intelligence. He previously led CNET's home energy and utilities category, with a focus on energy-saving advice, thermostats, and heating and cooling. Jon has more than a decade of experience writing and reporting, including as a statehouse reporter in Columbus, Ohio, a crime reporter in Birmingham, Alabama, and as a mortgage and housing market editor for Time's former personal finance brand, NextAdvisor. When he's not asking people questions, he can usually be found half asleep trying to read a long history book while surrounded by multiple cats. You can reach him at joreed@cnet.com Expertise Artificial intelligence, home energy, heating and cooling, home technology. Anthropic's most capable generative AI model is still in the hands of a select few organizations and cybersecurity professionals, but the most powerful Claude model you can use now is getting an upgrade.…